Family members wait for word from police after arriving down the street from a shooting involving multiple fatalities at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack) less

Family members wait for word from police after arriving down the street from a shooting involving multiple fatalities at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. ... more

Photo: Phelan M. Ebenhack, Associated Press

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This handout photo provided by the Orlando Police Department on June 12, 2016 shows police cars outside of the Pulse Night Club in Orlando following an "active shooting" and described as a "mass casuality situation," according to Orlando police. Several people were injured at a nightclub in downtown Orlando, Florida, early June 12, with police in the southern US state describing the situation as an "active shooting" and described as a "mass casuality situation," according to Orlando police. / AFP PHOTO / Orlando Police Department / HO / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ORLANDO POLICE DEPARTMENT" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS HO/AFP/Getty Images less

This handout photo provided by the Orlando Police Department on June 12, 2016 shows police cars outside of the Pulse Night Club in Orlando following an "active shooting" and described as a "mass casuality ... more

Photo: HO, AFP/Getty Images

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Orlando Mayor Buddy Dyer, second from right, and Orlando Police Chief John Mina arrive to a news conference after a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack) less

Orlando Mayor Buddy Dyer, second from right, and Orlando Police Chief John Mina arrive to a news conference after a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP ... more

Photo: Phelan M. Ebenhack, Associated Press

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FBI assistant special agent in charge Ron Hopper, center, answers questions from members of the media after a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. Listening are Orlando Police Chief John Mina, left, and Orange County Mayor Teresa Jacobs. (AP Photo/Phelan M. Ebenhack) less

FBI assistant special agent in charge Ron Hopper, center, answers questions from members of the media after a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. Listening are ... more

Orange County Mayor Teresa Jacobs, right, is briefed after arriving to the scene of a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack)

Orange County Mayor Teresa Jacobs, right, is briefed after arriving to the scene of a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack)

Photo: Phelan M. Ebenhack, Associated Press

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An Orange County Sheriff's Department SWAT member arrives to the scene of a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack)

An Orange County Sheriff's Department SWAT member arrives to the scene of a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack)

Photo: Phelan M. Ebenhack, Associated Press

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This handout photo provided by the Orlando Police Department on June 12, 2016 shows Orlando, Florida police chief John Mina(R) speaking at a press conference following a mass shooting at the Pulse Night Club in Orlando as mayor Buddy Dyer looks on. An estimated 20 people were killed at a gay nightclub after a heavily armed gunman seized hostages early June 12, prompting a police SWAT team to storm the venue, officials said. / AFP PHOTO / Orlando Police Department / HO / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ORLANDO POLICE DEPARTMENT" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS HO/AFP/Getty Images less

This handout photo provided by the Orlando Police Department on June 12, 2016 shows Orlando, Florida police chief John Mina(R) speaking at a press conference following a mass shooting at the Pulse Night Club in ... more

People wait outside the emergency entrance of the Orlando Regional Medical Center hospital after a shooting involving multiple fatalities at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP ... more

Photo: Phelan M. Ebenhack, Associated Press

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FBI assistant special agent in charge Ron Hopper, center, answers questions from members of the media after a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. Listening at left is Orange County Sheriff Jerry Demings. (AP Photo/Phelan M. Ebenhack) less

FBI assistant special agent in charge Ron Hopper, center, answers questions from members of the media after a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. Listening at left ... more

Photo: Phelan M. Ebenhack, Associated Press

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Emergency personnel wait with stretchers at the emergency entrance to Orlando Regional Medical Center hospital for the arrival of patients from the scene of a fatal shooting at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack) less

Emergency personnel wait with stretchers at the emergency entrance to Orlando Regional Medical Center hospital for the arrival of patients from the scene of a fatal shooting at Pulse Orlando nightclub in ... more

Photo: Phelan M. Ebenhack, Associated Press

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President Barack Obama and Vice President Joe Biden visit a memorial to the victims of the Pulse nightclub shooting, Thursday, June 16, 2016 in Orlando, Fla. Offering sympathy but no easy answers, Obama came to Orlando to try to console those mourning the deadliest shooting in modern U.S history.

President Barack Obama and Vice President Joe Biden visit a memorial to the victims of the Pulse nightclub shooting, Thursday, June 16, 2016 in Orlando, Fla. Offering sympathy but no easy answers, Obama came to

President Barack Obama hugs Orange County Mayor Teresa Jacobs upon the president's arrival at Orlando International Airport, Thursday, June 16, 2016, in Orlando, Fla. Obama is in Orlando today to pay respects to the victims of the Pulse nightclub shooting and meet with families of victims of the attack. (Stephen M. Dowell/Orlando Sentinel via AP) MAGS OUT; NO SALES; MANDATORY CREDIT less

President Barack Obama hugs Orange County Mayor Teresa Jacobs upon the president's arrival at Orlando International Airport, Thursday, June 16, 2016, in Orlando, Fla. Obama is in Orlando today to pay respects ... more

Photo: Stephen M. Dowell, Associated Press

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Kelly Greenwood, co-owner of Cardinal Casket Company, prepares a casket for a victim of the Pulse nightclub shooting for shipment in preparation for the funeral Wednesday, June 15, 2016, in Orlando, Fla. "It hits you, it hits everyone here," said Greenwood who lost a friend in the shooting. "I feel proud knowing that I made something for my friend's mother that will be with them the last time their family sees him." The locally owned company has so far received 23 orders for caskets ahead of the upcoming funerals for the victims. (AP Photo/David Goldman)

Kelly Greenwood, co-owner of Cardinal Casket Company, prepares a casket for a victim of the Pulse nightclub shooting for shipment in preparation for the funeral Wednesday, June 15, 2016, in Orlando, Fla. "It

Mourners arrive for the viewing and funeral service Kimberly Morris, June 16, 2016 in Kissimmee, Florida. Morris, who worked as a bouncer at the Pulse Nightclub, was killed in the shooting. The shooting at Pulse Nightclub, which killed 49 people and injured 53, is the worst mass-shooting event in American history.

Mourners arrive for the viewing and funeral service Kimberly Morris, June 16, 2016 in Kissimmee, Florida. Morris, who worked as a bouncer at the Pulse Nightclub, was killed in the shooting. The shooting at

A group of young men grieve at a memorial site for the victims of the Pulse Nightclub shooting, June 15, 2016 in Orlando, Florida. The shooting at Pulse Nightclub, which killed 49 people and injured 53, is the worst mass shooting in American history.

A group of young men grieve at a memorial site for the victims of the Pulse Nightclub shooting, June 15, 2016 in Orlando, Florida. The shooting at Pulse Nightclub, which killed 49 people and injured 53, is the

A prayer service is held for the victims of the Pulse Nightclub shooting at Delaney Street Baptist Church, June 15, 2016 in Orlando, Florida. The shooting at Pulse Nightclub, which killed 49 people and injured 53, is the worst mass shooting in American history.

A prayer service is held for the victims of the Pulse Nightclub shooting at Delaney Street Baptist Church, June 15, 2016 in Orlando, Florida. The shooting at Pulse Nightclub, which killed 49 people and injured

Doctors, nurses and first-responders hug after a brief prayer service in the emergency room at Florida Hospital in Orlando, Fla., Wednesday, June 15, 2016, to honor the victims of the Pulse nightclub mass shooting. (Joe Burbank/Orlando Sentinel via AP) less

Doctors, nurses and first-responders hug after a brief prayer service in the emergency room at Florida Hospital in Orlando, Fla., Wednesday, June 15, 2016, to honor the victims of the Pulse nightclub mass ... more

Photo: Joe Burbank

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A news van nearby a makeshift memorial set up for victims of the Pulse nightclub shooting sits outside Orlando Regional Medical Center in Orlando, Fla., June 15, 2016. A gunman who pledged allegiance to the Islamic State killed 49 people and wounded 53 in the crowded gay nightclub in Orlando early Sunday. (Hilary Swift/The New York Times) ORG XMIT: XNYT10 less

A news van nearby a makeshift memorial set up for victims of the Pulse nightclub shooting sits outside Orlando Regional Medical Center in Orlando, Fla., June 15, 2016. A gunman who pledged allegiance to the ... more

Demetrice Naulings cries while recalling in an interview how he survived the mass shooting at the Pulse nightclub that claimed the life of his friend Eddie Justice Tuesday, June 14, 2016, in Orlando, Fla. "I'm not going to get a chance to get another friend like that anymore," said Naulings. "Eddie was my angel." (AP Photo/David Goldman)

Demetrice Naulings cries while recalling in an interview how he survived the mass shooting at the Pulse nightclub that claimed the life of his friend Eddie Justice Tuesday, June 14, 2016, in Orlando, Fla. "I'm

Dr. Neil Finkler comforts Patience Carter as she is overcome with emotion after speaking to the media from the Florida Hospital about being shot in the Pulse gay nightclub terror attack on June 14, 2016 in Orlando, Florida. Omar Mateen killed 49 people and injured 53 others in what is the deadliest mass shooting in the country's history. less

Dr. Neil Finkler comforts Patience Carter as she is overcome with emotion after speaking to the media from the Florida Hospital about being shot in the Pulse gay nightclub terror attack on June 14, 2016 in ... more

Angel Santiago speaks to the media from the Florida Hospital about being shot in the Pulse gay nightclub terror attack on June 14, 2016 in Orlando, Florida. Omar Mateen killed 49 people and injured 53 others in what is the deadliest mass shooting in the country's history. (Photo by Joe Raedle/Getty Images)

Angel Santiago speaks to the media from the Florida Hospital about being shot in the Pulse gay nightclub terror attack on June 14, 2016 in Orlando, Florida. Omar Mateen killed 49 people and injured 53 others in

FBI agents return to the scene of the mass shooting at the Pulse nightclub in Orlando, Fla., Tuesday, June 14, 2016. (Joe Burbank/Orlando Sentinel via AP)

FBI agents return to the scene of the mass shooting at the Pulse nightclub in Orlando, Fla., Tuesday, June 14, 2016. (Joe Burbank/Orlando Sentinel via AP)

Photo: Joe Burbank/AP

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Alicia Stelly stops to look at a small makeshift memorial in remembrance of the victims of the Pulse nightclub shooting, at Lake Eola Park on Tuesday, June 14, 2016, in Orlando, Fla. (Jacob Langston/Orlando Sentinel via AP) less

Alicia Stelly stops to look at a small makeshift memorial in remembrance of the victims of the Pulse nightclub shooting, at Lake Eola Park on Tuesday, June 14, 2016, in Orlando, Fla. (Jacob Langston/Orlando ... more

Photo: Jacob Langston, Associated Press

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Kelli Cantu 24, left and Soe Aponte, 23, of Orlando become emotional Tuesday, June 14, 2016, as they visit a growing memorial at the The Dr. Phillips Center for the victims of the mass shooting at the Pulse Nightclub. (Red Huber/Orlando Sentinel via AP) less

Kelli Cantu 24, left and Soe Aponte, 23, of Orlando become emotional Tuesday, June 14, 2016, as they visit a growing memorial at the The Dr. Phillips Center for the victims of the mass shooting at the Pulse ... more

Photo: Red Huber, Associated Press

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Amy Semesco, left, wipes a tear, while visiting a makeshift memorial for the victims of a mass shooting at the Pulse nightclub with Bree Balchunas on Tuesday, June 14, 2016, in Orlando, Fla. (AP Photo/David Goldman)

Amy Semesco, left, wipes a tear, while visiting a makeshift memorial for the victims of a mass shooting at the Pulse nightclub with Bree Balchunas on Tuesday, June 14, 2016, in Orlando, Fla. (AP Photo/David

Rhonda Rodeffer, right, walks with her daughter Kennedy, 4, as they visit a makeshift memorial for the victims of a mass shooting at the Pulse nightclub Tuesday, June 14, 2016, in Orlando, Fla. (AP Photo/David Goldman)

Rhonda Rodeffer, right, walks with her daughter Kennedy, 4, as they visit a makeshift memorial for the victims of a mass shooting at the Pulse nightclub Tuesday, June 14, 2016, in Orlando, Fla. (AP Photo/David

A police officer walks toward the scene of the mass shooting at the Pulse nightclub early Tuesday, June 14, 2016, in Orlando, Fla. (AP Photo/David Goldman)

A police officer walks toward the scene of the mass shooting at the Pulse nightclub early Tuesday, June 14, 2016, in Orlando, Fla. (AP Photo/David Goldman)

Photo: David Goldman/AP

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Thousands gather for a memorial rally at the Plaza at the Dr. Phillips Performing Arts Center in downtown Orlando on Monday, June 13, 2016 to honor those killed and wounded in the Pulse nightclub attack.

Thousands gather for a memorial rally at the Plaza at the Dr. Phillips Performing Arts Center in downtown Orlando on Monday, June 13, 2016 to honor those killed and wounded in the Pulse nightclub attack.

Photo: Carolyn Cole/LA Times Via Getty Images

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Madeline Lago, 15, and her mother Carmen Lago (center) were among the thousands who gathered for a memorial rally at the Plaza at the Dr. Phillips Performing Arts Center in downtown Orlando on Monday, June 13, 2016 to honor those killed and wounded in the Pulse nightclub attack. They bow their heads as the bell was tolled.

Madeline Lago, 15, and her mother Carmen Lago (center) were among the thousands who gathered for a memorial rally at the Plaza at the Dr. Phillips Performing Arts Center in downtown Orlando on Monday, June 13,

Thousands gather at the Dr. Phillips Center for the Performing Arts to pay their respects for those lost in the Pulse nightclub shooting in Orlando, USA on June 13, 2016.

Thousands gather at the Dr. Phillips Center for the Performing Arts to pay their respects for those lost in the Pulse nightclub shooting in Orlando, USA on June 13, 2016.

Photo: Anadolu Agency/Getty Images

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People embrace during a vigil outside the Dr. Phillips Center for the Performing Arts for the mass shooting victims at the Pulse nightclub June 13, 2016 in Orlando, Florida. The American gunman who launched a murderous assault on a gay nightclub in Orlando was radicalized by Islamist propaganda, officials said Monday, as they grappled with the worst terror attack on US soil since 9/11.

People embrace during a vigil outside the Dr. Phillips Center for the Performing Arts for the mass shooting victims at the Pulse nightclub June 13, 2016 in Orlando, Florida. The American gunman who launched a

People arrive at the Beardall Senior Center to learn from authorities if their relative or friends were killed in the Pulse nightclub shooting, June 13, 2016 in Orlando, Florida. Omar Mateen killed 49 people and injured 53 others in what is the deadliest mass shooting in the country's history. (Photo by Joe Raedle/Getty Images)

People arrive at the Beardall Senior Center to learn from authorities if their relative or friends were killed in the Pulse nightclub shooting, June 13, 2016 in Orlando, Florida. Omar Mateen killed 49 people

Pictures of one of the massacre victims, Javier Jorge-Reyes, 40, are left at a makeshift memorial at Phillips Center for the Performing Arts in Orlando, USA on June 13, 2016. (Photo by Samuel Corum/Anadolu Agency/Getty Images)

Pictures of one of the massacre victims, Javier Jorge-Reyes, 40, are left at a makeshift memorial at Phillips Center for the Performing Arts in Orlando, USA on June 13, 2016. (Photo by Samuel Corum/Anadolu

Surrounded by members of the media, family and friends of the victims of the Pulse Nightclub shooting walk to their cars as they leave the Beardall Senior Center where they gathered to learn more information about loved ones who were injured or killed in the attack, June 13, 2016 in Orlando, Florida. The shooting at Pulse Nightclub, which killed 49 people and injured 53, is the worst mass-shooting event in American history. (Photo by Drew Angerer/Getty Images)

Surrounded by members of the media, family and friends of the victims of the Pulse Nightclub shooting walk to their cars as they leave the Beardall Senior Center where they gathered to learn more information

Greg Larsen writes a message on a banner Monday, June 13, 2016, in Orlando, Fla., to one of his friends killed during a fatal shooting at Pulse Orlando nightclub. (AP Photo/Chris O'Meara)

Greg Larsen writes a message on a banner Monday, June 13, 2016, in Orlando, Fla., to one of his friends killed during a fatal shooting at Pulse Orlando nightclub. (AP Photo/Chris O'Meara)

Photo: Chris O'Meara/AP

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Krystle Martin weeps as she views a makeshift memorial Monday, June 13, 2016, for the victims of a fatal shooting at the Pulse Orlando nightclub in Orlando, Fla. (AP Photo/Chris O'Meara)

Krystle Martin weeps as she views a makeshift memorial Monday, June 13, 2016, for the victims of a fatal shooting at the Pulse Orlando nightclub in Orlando, Fla. (AP Photo/Chris O'Meara)

Photo: Chris O'Meara/AP

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A member of the FBI looks for evidence in the area behind the Pulse nightclub June 13, 2016 in Orlando, Florida. Forty-nine people died and more than 50 were injured early June 12 when a heavily-armed gunman opened fire and seized hostages at a gay nightclub in Orlando, Florida, in the worst mass shooting in US history

A member of the FBI looks for evidence in the area behind the Pulse nightclub June 13, 2016 in Orlando, Florida. Forty-nine people died and more than 50 were injured early June 12 when a heavily-armed gunman

Brett Morian, from Daytona Beach, hugs an attendee during the candlelight vigil at Ember in Orlando, Fla., on Sunday, June 12, 2016. (Joshua Lim/Orlando Sentinel/TNS)

Brett Morian, from Daytona Beach, hugs an attendee during the candlelight vigil at Ember in Orlando, Fla., on Sunday, June 12, 2016. (Joshua Lim/Orlando Sentinel/TNS)

Photo: Joshua Lim, TNS

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Friends and family grieve after a list of hospitalized victims was released, implying the death of those who weren't on the list and hadn't been heard from, outside a Hampton Inn & Suites hotel near the Orlando Regional Medical Center in Orlando, Fla., Sunday, June 12, 2016. A gunman opened fire inside a crowded nightclub early Sunday, before dying in a gunfight with SWAT officers, police said. (Loren Elliott/Tampa Bay Times via AP) less

Friends and family grieve after a list of hospitalized victims was released, implying the death of those who weren't on the list and hadn't been heard from, outside a Hampton Inn & Suites hotel near the Orlando ... more

Photo: Loren Elliott, Associated Press

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People react the Pulse nightclub shooting outside the hotel where family members are gathering in Orlando, Florida, on June 12, 2016. Fifty people died and another 53 were injured when a gunman opened fire and seized hostages at a gay nightclub in Florida, police said June 12, making it the worst mass shooting in US history. less

People react the Pulse nightclub shooting outside the hotel where family members are gathering in Orlando, Florida, on June 12, 2016. Fifty people died and another 53 were injured when a gunman opened fire and ... more

Photo: GREGG NEWTON, AFP/Getty Images

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Annette Stubbs, a pastor at a local church, prays for victims a few blocks from a crime scene at the nightclub where a mass shooting took place the night before in Orlando, Fla., Sunday, June 12, 2016. A gunman opened fire inside the gay nightclub early Sunday, killing at least 50 people before dying in a gunfight with SWAT officers, police said. less

Annette Stubbs, a pastor at a local church, prays for victims a few blocks from a crime scene at the nightclub where a mass shooting took place the night before in Orlando, Fla., Sunday, June 12, 2016. A gunman ... more

Photo: Loren Elliott, Associated Press

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Family members wait for word from police after arriving down the street from a shooting involving multiple fatalities at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. Ebenhack) less

Family members wait for word from police after arriving down the street from a shooting involving multiple fatalities at Pulse Orlando nightclub in Orlando, Fla., Sunday, June 12, 2016. (AP Photo/Phelan M. ... more

Photo: Phelan M. Ebenhack, Associated Press

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An injured man is escorted out of the Pulse nightclub after a shooting rampage, Sunday morning June 12, 2016, in Orlando, Fla. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday, killing at least 50 people before dying in a gunfight with SWAT officers, police said. It was the deadliest mass shooting in American history. less

An injured man is escorted out of the Pulse nightclub after a shooting rampage, Sunday morning June 12, 2016, in Orlando, Fla. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded ... more

Photo: Steven Fernandez, Associated Press

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Jermaine Towns, left, and Brandon Shuford wait down the street from a multiple shooting at a nightclub in Orlando, Fla., Sunday, June 12, 2016. Towns said his brother was in the club at the time. A gunman opened fire at a nightclub in central Florida, and multiple people have been wounded, police said Sunday. (AP Photo/Phelan M. Ebenhack) less

Jermaine Towns, left, and Brandon Shuford wait down the street from a multiple shooting at a nightclub in Orlando, Fla., Sunday, June 12, 2016. Towns said his brother was in the club at the time. A gunman ... more

Photo: Phelan M. Ebenhack, Associated Press

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An injured person is escorted out of the Pulse nightclub after a shooting rampage, Sunday morning June 12, 2016, in Orlando, Fla. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday, killing at least 50 people before dying in a gunfight with SWAT officers, police said. It was the deadliest mass shooting in American history. less

An injured person is escorted out of the Pulse nightclub after a shooting rampage, Sunday morning June 12, 2016, in Orlando, Fla. A gunman wielding an assault-type rifle and a handgun opened fire inside a ... more

Photo: Steven Fernandez, Associated Press

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This handout photo provided by the Orlando Police Department on June 12, 2016 shows a bullet hole left in a kevlar helmet worn by an Orlando police officer, that saved his life during the shootings at the Pulse Night Club in Orlando, Florida. Fifty people died and another 53 were injured early June 12 when a heavily-armed gunman opened fire and seized hostages at a gay nightclub in Orlando, Florida, police said, in the worst mass shooting in US history. / AFP PHOTO / Orlando Police Department / HO / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ORLANDO POLICE DEPARTMENT" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS HO/AFP/Getty Images less

This handout photo provided by the Orlando Police Department on June 12, 2016 shows a bullet hole left in a kevlar helmet worn by an Orlando police officer, that saved his life during the shootings at the Pulse ... more

Photo: Orlando Police

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This photo shows the Pulse nightclub following a fatal shooting Sunday, June 12, 2016, in Orlando, Fla.

This photo shows the Pulse nightclub following a fatal shooting Sunday, June 12, 2016, in Orlando, Fla.

Concerned friends and family of victims of the Pulse nightclub shooting wait outside of the Orlando Police Department on Sunday, June 12, 2016. (Joe Burbank/Orlando Sentinel/TNS)

Concerned friends and family of victims of the Pulse nightclub shooting wait outside of the Orlando Police Department on Sunday, June 12, 2016. (Joe Burbank/Orlando Sentinel/TNS)

Photo: Joe Burbank, TNS

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Orlando, second from right, was at the nightclub and trapped for three hours in a bathroom (He wouldn't give last name.) Orlando and family attend a vigil and church service held at Joy Metropolitan Community Church very close to Pulse nightclub. Fifty people were killed and more than 50 others injured in a mass shooting at Pulse nightclub, located at 1912 S. Orange Ave., Orlando, Florida in the worst mass shooting in American history. Twenty-year-old Omar Mateen of Port St. Lucie, identified as the shooter. (Photo by Carolyn Cole/Los Angeles Times via Getty Images)

Orlando, second from right, was at the nightclub and trapped for three hours in a bathroom (He wouldn't give last name.) Orlando and family attend a vigil and church service held at Joy Metropolitan Community

A member of the Medical Examiners office wheels a body to a vehicle from the mass shooting at Pulse Nightclub where Omar Mateen allegedly killed at least 50 people on June 12, 2016 in Orlando, Florida. The mass shooting killed at least 50 people and injuring 53 others in what is the deadliest mass shooting in the countryÃs history. (Photo by Joe Raedle/Getty Images)

A member of the Medical Examiners office wheels a body to a vehicle from the mass shooting at Pulse Nightclub where Omar Mateen allegedly killed at least 50 people on June 12, 2016 in Orlando, Florida. The mass

FBI agents investigate near the damaged rear wall of the Pulse Nightclub where Omar Mateen allegedly killed at least 50 people on June 12, 2016 in Orlando, Florida. The mass shooting killed at least 50 people and injuring 53 others in what is the deadliest mass shooting in the country's history. (Photo by Joe Raedle/Getty Images) less

FBI agents investigate near the damaged rear wall of the Pulse Nightclub where Omar Mateen allegedly killed at least 50 people on June 12, 2016 in Orlando, Florida. The mass shooting killed at least 50 people ... more

Photo: Joe Raedle, Getty Images

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On the street behind the Pulse nightclub, the investigation continues. Fifty people were killed and more than 50 others injured in a mass shooting at Pulse nightclub, located at 1912 S. Orange Ave., Orlando, Florida in the worst mass shooting in American history. Twenty-year-old Omar Mateen of Port St. Lucie, identified as the shooter. (Photo by Carolyn Cole/Los Angeles Times via Getty Images)

On the street behind the Pulse nightclub, the investigation continues. Fifty people were killed and more than 50 others injured in a mass shooting at Pulse nightclub, located at 1912 S. Orange Ave., Orlando,

Sitora Yusufiy, the ex-wife of Orlando shooting suspect Omar Mateen, and her fiance Marcio Dias, give a statement to the media at their home outside Boulder, Colo., Sunday, June 12, 2016. (Autumn Parry/Boulder Daily Camera via AP) less

Sitora Yusufiy, the ex-wife of Orlando shooting suspect Omar Mateen, and her fiance Marcio Dias, give a statement to the media at their home outside Boulder, Colo., Sunday, June 12, 2016. (Autumn Parry/Boulder ... more

Photo: Autumn Parry, Associated Press

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Lt. James Young of the Orlando Police department is hugged by Karen Castelloes after a memorial service at the Joy MCC Church for the victims of the terror attack at the the Pulse Nightclub where Omar Mateen allegedly killed more than 50 people on June 12, 2016 in Orlando, Florida. The mass shooting killed at least 50 people and injuring 53 others in what is the deadliest mass shooting in the countryÃs history. (Photo by Joe Raedle/Getty Images)

Lt. James Young of the Orlando Police department is hugged by Karen Castelloes after a memorial service at the Joy MCC Church for the victims of the terror attack at the the Pulse Nightclub where Omar Mateen

Mourners attend a memorial service at the Joy MCC Church for the victims of the terror attack at the the Pulse Nightclub where Omar Mateen allegedly killed more than 50 people on June 12, 2016 in Orlando, Florida. The mass shooting killed at least 50 people and injuring 53 others in what is the deadliest mass shooting in the countryÃs history. (Photo by Joe Raedle/Getty Images)

Mourners attend a memorial service at the Joy MCC Church for the victims of the terror attack at the the Pulse Nightclub where Omar Mateen allegedly killed more than 50 people on June 12, 2016 in Orlando,

Mina Justice shows a text she received from her son Eddie Justice at Pulse nightclub during a fatal shooting in Orlando, Fla., Sunday, June 12, 2016. Justice hasn't heard from her son since the messages.

Mina Justice shows a text she received from her son Eddie Justice at Pulse nightclub during a fatal shooting in Orlando, Fla., Sunday, June 12, 2016. Justice hasn't heard from her son since the messages.

Photo: Associated Press

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Mina Justice shows a text message she received from her son Eddie Justice at Pulse nightclub during a fatal shooting in Orlando, Fla., Sunday, June 12, 2016. Justice hasn't heard from her son since the messages. less

Mina Justice shows a text message she received from her son Eddie Justice at Pulse nightclub during a fatal shooting in Orlando, Fla., Sunday, June 12, 2016. Justice hasn't heard from her son since the ... more

Photo: Associated Press

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Mourners attend a memorial service at the Joy MCC Church for the victims of the terror attack at the the Pulse Nightclub where Omar Mateen allegedly killed more than 50 people on June 12, 2016 in Orlando, Florida. The mass shooting killed at least 50 people and injuring 53 others in what is the deadliest mass shooting in the countryÃs history. (Photo by Joe Raedle/Getty Images)

Mourners attend a memorial service at the Joy MCC Church for the victims of the terror attack at the the Pulse Nightclub where Omar Mateen allegedly killed more than 50 people on June 12, 2016 in Orlando,

Susan Stephens, right (back to camera) gets a hug from Karen Castelloes, facing, before a vigil and prayer service is held at Joy Metropolitan Community Church very close to Pulse nightclub. Fifty people were killed and more than 50 others injured in a mass shooting at Pulse nightclub, located at 1912 S. Orange Ave., Orlando, Florida in the worst mass shooting in American history. Twenty-year-old Omar Mateen of Port St. Lucie, identified as the shooter. (Photo by Carolyn Cole/Los Angeles Times via Getty Images)

Susan Stephens, right (back to camera) gets a hug from Karen Castelloes, facing, before a vigil and prayer service is held at Joy Metropolitan Community Church very close to Pulse nightclub. Fifty people were

A group of people walk to the emergency room of Orlando Regional Medical Center after a shooting involving multiple fatalities at a nightclub, Sunday, June 12, 2016, in Orlando, Fla.

A group of people walk to the emergency room of Orlando Regional Medical Center after a shooting involving multiple fatalities at a nightclub, Sunday, June 12, 2016, in Orlando, Fla.

Photo: John Raoux, Associated Press

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Terry DeCarlo, executive director of the LGBT Center of Central Florida, left, Kelvin Cobaris, pastor of The Impact Church, center, and Orlando City Commissioner Patty Sheehan console each other after a shooting involving multiple fatalities at a nightclub in Orlando, Fla., Sunday, June 12, 2016. less

Terry DeCarlo, executive director of the LGBT Center of Central Florida, left, Kelvin Cobaris, pastor of The Impact Church, center, and Orlando City Commissioner Patty Sheehan console each other after a ... more

Photo: Phelan M. Ebenhack, Associated Press

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Angel Mendez, standing outside the Orlando Regional Medical Center, holds up a cell phone photo trying to get information about his brother Jean C. Mendez that was at the Pulse Nightclub where a shooting involving multiple fatalities occurred, Sunday, June 12, 2016, in Orlando, Fla. less

Angel Mendez, standing outside the Orlando Regional Medical Center, holds up a cell phone photo trying to get information about his brother Jean C. Mendez that was at the Pulse Nightclub where a shooting ... more

Photo: John Raoux, Associated Press

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Long lines of people wait at the OneBlood Donation Center to donate blood for the injured victims of the Pulse nightclub shooting on June 12, 2016 in Orlando, Florida. The suspected shooter, Omar Mateen, was shot and killed by police. 50 people are reported dead and 53 were injured in what is now the worst mass shooting in U.S. history. less

Long lines of people wait at the OneBlood Donation Center to donate blood for the injured victims of the Pulse nightclub shooting on June 12, 2016 in Orlando, Florida. The suspected shooter, Omar Mateen, was ... more

Photo: Gerardo Mora, Getty Images

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Potential blood donors line up outside the oneblood facility on Beach Blvd. In Jacksonville, Fla., Sunday, June 12, 2016, to help the victims from the shooting at a nightclub in Orlando. A gunman wielding an assault-type rifle and a handgun opened fire inside a gay nightclub early Sunday, killing at least 50 people before dying in a gunfight with SWAT officers, police said. It was the worst mass shooting in American history. less

Potential blood donors line up outside the oneblood facility on Beach Blvd. In Jacksonville, Fla., Sunday, June 12, 2016, to help the victims from the shooting at a nightclub in Orlando. A gunman wielding an ... more

Photo: Bob Self, Associated Press

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Aimee McCarthy from Jacksonville, Fla., gives blood at the oneblood facility on Beach Blvd. In Jacksonville, Fla., Sunday, June 12, 2016, to help the victims from a mass shooting at a nightclub in Orlando, Sunday, June 12, 2016. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday, before dying in a gunfight with SWAT officers, police said. It was the worst mass shooting in American history. less

Aimee McCarthy from Jacksonville, Fla., gives blood at the oneblood facility on Beach Blvd. In Jacksonville, Fla., Sunday, June 12, 2016, to help the victims from a mass shooting at a nightclub in Orlando, ... more

Photo: Bob Self, Associated Press

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People mourn for victims of the mass shooting just a block from the scene in Orlando, Florida, on June 12, 2016. Fifty people died and another 53 were injured when a gunman opened fire and seized hostages at a gay nightclub in Florida, police said June 12, making it the worst mass shooting in US history. less

People mourn for victims of the mass shooting just a block from the scene in Orlando, Florida, on June 12, 2016. Fifty people died and another 53 were injured when a gunman opened fire and seized hostages at a ... more

Photo: GREGG NEWTON, AFP/Getty Images

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Ray Rivera, a DJ at Pulse Orlando nightclub, is consoled by a friend, outside of the Orlando Police Department after a shooting involving multiple fatalities at the nightclub, Sunday, June 12, 2016. (Joe Burbank/Orlando Sentinel via AP) less

Ray Rivera, a DJ at Pulse Orlando nightclub, is consoled by a friend, outside of the Orlando Police Department after a shooting involving multiple fatalities at the nightclub, Sunday, June 12, 2016. (Joe ... more

Photo: Joe Burbank, Associated Press

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A Bomb Disposal Unit checks for explosives around the apartment building where shooting suspect Omar Mateen is believed to have lived on June 12, 2016 in Fort Pierce, Florida. The mass shooting at Pulse nightclub in Orlando, Florida killed at least 50 people and injured 53 others in what is the deadliest mass shooting in the country's history. less

A Bomb Disposal Unit checks for explosives around the apartment building where shooting suspect Omar Mateen is believed to have lived on June 12, 2016 in Fort Pierce, Florida. The mass shooting at Pulse ... more

Photo: Joe Raedle, Getty Images

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A U.S. flag is flown at half staff at the White House after the Orlando mass shooting June 12, 2016 in Washington, DC. At least 50 people were killed and 53 were injured after a gunman opened fire in a gay nightclub in Orlando, Florida. less

A U.S. flag is flown at half staff at the White House after the Orlando mass shooting June 12, 2016 in Washington, DC. At least 50 people were killed and 53 were injured after a gunman opened fire in a gay ... more

Photo: Alex Wong, Getty Images

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A Bomb Disposal Unit checks for explosives around the apartment building where shooting suspect Omar Mateen is believed to have lived on June 12, 2016 in Fort Pierce, Florida. The mass shooting at Pulse nightclub in Orlando, Florida killed at least 50 people and injured 53 others in what is the deadliest mass shooting in the country's history. less

A Bomb Disposal Unit checks for explosives around the apartment building where shooting suspect Omar Mateen is believed to have lived on June 12, 2016 in Fort Pierce, Florida. The mass shooting at Pulse ... more

Photo: Joe Raedle, Getty Images

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Police block the entrance to the apartment building where shooting suspect Omar Mateen is believed to have lived on June 12, 2016 in Fort Pierce, Florida. The mass shooting at Pulse nightclub in Orlando, Florida killed at least 50 people and injured 53 others in what is the deadliest mass shooting in the country's history. less

Police block the entrance to the apartment building where shooting suspect Omar Mateen is believed to have lived on June 12, 2016 in Fort Pierce, Florida. The mass shooting at Pulse nightclub in Orlando, ... more

Photo: Joe Raedle, Getty Images

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Gary Wilford, of Orlando, Fla., weeps near the scene of a mass shooting, Sunday, June 12, 2016, in Orlando, Fla. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday, killing at least 50 people before dying in a gunfight with SWAT officers, police said. It was the worst mass shooting in American history. less

Gary Wilford, of Orlando, Fla., weeps near the scene of a mass shooting, Sunday, June 12, 2016, in Orlando, Fla. A gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub ... more

Photo: Tamara Lush, Associated Press

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Faytriana Evans, who was at the Pulse nightclub, talks about what she saw while waiting for friends outside of Orlando Regional Medical Center on Sunday, June 12, 2016.

Faytriana Evans, who was at the Pulse nightclub, talks about what she saw while waiting for friends outside of Orlando Regional Medical Center on Sunday, June 12, 2016.

"Lt. Governor Patrick and every Texas is stunned and saddened by the outrageous act of domestic terrorism that has occurred in Orlando," Blakemore said. "... Regarding this morning's scripture posting on social media, be assured that the post was not done in response to last night's tragedy. The post was designed and scheduled last Thursday."

A Bible verse is tweeted from Patrick's account every Sunday at 7 a.m.

Another verse was tweeted from the account 30 minutes later, this time from Psalm 37:39, which reads, "The Salvation of the righteous come from the Lord; He is their stronghold in time of trouble."

"Hate and violence have no place in America," he said. "Unfortunately, Texans in mourning for our families in Florida woke up to an embarrassment from their lieutenant governor. Lt.Gov Dan Patrick, please apologize immediately. Make this right. We are better than this."

Orlando Police Chief John Mina says authorities have not determined an exact number of people killed, but that "approximately 50" have died.

Florida Department of Law Enforcement Special Agent in Charge Danny Banks says the mass shooting is being investigated as an act of terrorism. He says authorities are looking into whether this was an act of domestic or international terror, and if the shooter was a lone wolf.

Mina says the shooter was armed with an assault-type rifle, a handgun and some type of suspicious device. Police had said previously on Twitter that there was a "controlled explosion" at the scene of the shooting at Pulse Orlando. Mina says that noise was caused by a device intended to distract the shooter.